Spiritus loci (Latin, "spirit of the place")
is a term of ancient Pagan traditions meaning the spiritual being inhabiting
a particular geographical location. Some modern writers interpreted this
as the "place where a spirit manifests," which is locus spiritus.
A.G.H.

Source:

Greer, John Michael. The New Encyclopedia of the Occult.
St. Paul, MN, Llewellyn Worldwide. p. 449-450